Articles

Latent Toxoplasma gondii infection affects about one-third of the global population and, although long considered asymptomatic in immunocompetent people, is increasingly linked to psychological, behavioral, cognitive, and psychiatric outcomes. Evidence across reviews, meta-analyses, cohort studies, and cross-sectional studies indicates that seropositivity is associated most consistently with schizophrenia, and also with obsessive-compulsive disorder, anxiety, bipolar disorder, and some other psychiatric presentations, although effect sizes and consistency vary by disorder and study design. An overview of the relationship between latent toxoplasmosis and psychology is the goal of this article.